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Railways PYQCBT 1 2016

RRB NTPC · Question 18

Why can't fish survive in distilled water? A. Can't breathe in it B. Osmosis dilutes fish body fluids C. It does not contain oxygen D. It does not contain food

  1. B

  2. D

  3. A

  4. C

Show answer & explanation

Answer: (A) B

Explanation

Distilled water has no dissolved salts. A freshwater or marine fish placed in it gains water by osmosis, diluting its body fluids and upsetting its salt balance, so it cannot survive for long.